BS84B08A-3/BS84C12A-3
A/D Type Touch Key MCU
General Description
These devices are a series of Flash Memory A/D type 8-bit high performance RISC architecture
microcontrollers with fully integrated touch key functions. With all touch key functions provided
internally and with the convenience of Flash Memory multi-programming features, this device range
has all the features to offer designers a reliable and easy means of implementing Touch Keyes within
their products applications.
Analog feature include a multi-channel 12-bit A/D converter. Protective features such as an internal
Watchdog Timer and Low Voltage Reset coupled with excellent noise immunity and ESD protection
ensure that reliable operation is maintained in hostile electrical environments.
The touch key functions are fully integrated completely eliminating the need for external
components. In addition to the flash program memory, other memory includes an area of RAM Data
Memory as well as an area of EEPROM memory for storage of non-volatile data such as serial
numbers, calibration data etc.
All devices include fully integrated low and high speed oscillators which require no external
components for their implementation. The ability to operate and switch dynamically between a range
of operating modes using different clock sources gives users the ability to optimise microcontroller
operation and minimise power consumption. Easy communication with the outside world is provided
using the internal I
2
C and SPI interfaces, while the inclusion of flexible I/O programming features,
Timer/Event Counter and many other features further enhance device functionality and flexibility.
These touch key devices will find excellent use in a huge range of modern Touch Key product
applications such as instrumentation, household appliances, electronically controlled tools to name
but a few.
Rev. 1.00
7
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HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
